61692090 has 16 divisors (see below), whose sum is σ = 148061088. Its totient is φ = 16451216.

The previous prime is 61692073. The next prime is 61692091. The reversal of 61692090 is 9029616.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61692091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028172 + ... + 1028231.

It is an arithmetic number, because the mean of its divisors is an integer number (9253818).

Almost surely, 2^61692090 is an apocalyptic number.

61692090 is an abundant number, since it is smaller than the sum of its proper divisors (86368998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61692090 is a wasteful number, since it uses less digits than its factorization.

61692090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056413.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 61692090 is about 7854.4312333867. The cubic root of 61692090 is about 395.1328720323.

The spelling of 61692090 in words is "sixty-one million, six hundred ninety-two thousand, ninety".